Driving connection



July 12, 1932. v GEHRES 1,866,702

DRIVING CONNECTION Filed April 15, 1930 INVENTOR /W A ATTORN EYS Patented July 12; 1932 UNITED T S rrnwrrr A. onnnns. or MOUNT VERNON,': also, assieiion 150 Zeroing-se mental PORATION, or MOUNT VERNON, c1110, e oonronuroN ior.l., on ro3 DRIVING ooN norIoN Application-filed'ApriIiS, i930. and sat r s-4 The invention relates to a driving'connection designed more particularly for air compressors driven from gas engines, and aims primarily to provide such a connection which 5 will enable the installation to be made more compact and economical, while still being adequate from the standpoint of strength, stress distribution, etc. 7

Further objects and advantages of the invention will be in part obvious and in part specifically pointed out in the description hereinafter contained which, taken in con. junction with the accompanying drawing, discloses a preferre'dembodiment of the inbe considered merely as illustrative of .its principles. In the drawing-- Fig. 1 is a vertical longitudinal sectional view taken through a gas engine and air driving connection embodying the features of the present invention.

Fig. 2 is a transverse section taken on line 22 of Fig. 1, looking in the direction of the arrows.

The invention as illustrated'is applied to a gas engine having a cylinder 1, piston 2, preferably of the trunk type, and a connecting rod 3, connected between the pin 4 of the piston and a crank pin 5 on crank 6 which is illustrated as being of the center type and provided with suitable bearings 7 on each side, and fly-wheels 8. 1

The compressor to be driven by the gas engine is shown as provided with a cylinder 9 alined with cylinder 1 above mentioned, a piston 10 and a piston rod or plunger 11 extending toward the crank structure above described. Since the specific construction of many of the parts of the 'gas engine and com pressor units are not important to the present invention, they will not be described detail herein. 7

It has heretofore been proposed to drive compressors from engines by the use of yokes interposed therebetween, but the yokes heretofore suggested for such purpose in so far as I am aware, have been so constructed as to lie in the plane of movement of the connectvention. Such embodiment, however, is to compressor installation, provided with a connecting rod ,3 is the limitin ing rod, and therefore had to be of such large w he connecting d t w ng an ularly within them, that the yokes could n'ot-penetrateinto'the engine cylinder to any substantial extent, and therefore the installemon-necessarily becameunduly long.

' Inaccordance with the" present invention for the above purp'o'sefwhich are'located at one sldefor on opposite sides, of the plane of movement of the connecting rod," whereby the engine end of the yoke may be so reduced in size as to be capable of penetrating intothe engme cylinder along. with. the connecting rod; thusilthelen'gthof the engine maybe' I employ'ja yoke, or preferably two yokes, f

ably-connected to the piston 2"as by bolts 14. V

lhe opposite end of yoke12 issho-wn'as se-'- cured "by bolts 15 to a transverse plate 163011 the end of piston-rod 1-1. a The yokeis;pro'- vided with a large opening 17fwithin which an extension 18 on the'crahk' pin-rotates (with clearance) as the engine reciprocateathe yoke being thus interposed between the path of travel' of the connecting rod3, and' the'pathoftravel of crank 6. As shown in Fig. 2,1 preifer to'employ a pair of yokes 12, one on each side; of the connecting 'rod 3, and each constructed as 'above" set forth. This will balance the stresses set up, and in the illustrated form. of theinvention the weight of the two yokes'12 is carried by guide sleeve 19 secured 'tothe tops of the yoks-bybOlts '20 and 'slidable along a stationary rod 21.

As shown by Fig. 1, the angularity of the factor on the length of the engine, the drlving yokes not requiring any extra length toclea-r them of the cylinder walls,'andthe trunk type pis 7 ton with its pin 4 located well within it, provides adequate bearing for the parts during operation without the necessity of employing a crosshead.

, I While a specific form of the invention has i been described-it should be understood'that many changes may be made therein without departing from its principles as set forth in f the appended claims. V

Iclaim: I

1. In combination,- a driving 'cyilinder, a piston of the trunk type working therein, a

crank and crank pin, a connecting rod di rect I connected and pivoted with respect'tothe piston and-crank pin, a 'drivenplungerand means for driving said plunger from said piston comprising a yoke interposed therebetween, said yoke beinglocated between the paths of swing of the connecting rod and $3 k 5 4 ..v J c In combination, a driving cylinder, a piston of the trunk type working"therein,-'a pair ofcranks and a crank pin therebetween,

23 a connecting rod direct connected and ipiVe 'oted with respect to the piston and crank pin, a driven plunger, and meansfor driving said plungercfrom said piston comprisingagpair of yokes interposed therebetweemsaid yokes 25 being located on opposite sides of thenonnectingrod and being respectively interposed between the pathsof swing of, the connecting rodandcorresponding-crank, 7 v

V I 3. In combination, adriving cylinder, a

piston ofthe trunk type working therein, a

crank and crank; pin, a connecting rod direct connected andpivoted' with respect tothe piston and crank pin, a driven .plnnge'r, and means fordriving saidplnnger from said piston comprising a; pair of jyokes interposed therebetween, said yokes being located on opposite' sides of the connecting rodand being respectively interposed between the paths of swing ofthe. connecting rod and correspond:-

40 ing crank, said ,yokes being provided'with intermediate portions shaped; to cl'e'ar, the path of swing of the crank pin; v s

. 4. In'combination a driving cylindelgla piston of-the trunk-type-working therein, a

crankand crank pin, aconnectin'groddirect' connected}. and pivotedj with -respect to the piston and crank pin, a driven plunger and s 1 means vfor driving said plunger: from said piston comprising a yoke interposed "there-t 5 between, said yoke being located between the paths of swing of the connecting rod andcrank and aslidablesupportfor.saidyoke. In testimony whereof I E have signed my? nameto this'specification. V -v Y HEWITT GEH-RESL-w j 

